[asshanson]

You should be able to take it to any shop of your choice and get an estimate on parts and labor for the replacement cost. I think that should include the STI parts on your car, like fogs or front lip. Their insurance can either pay the shop directly or cut you a check for the estimate.

Without a police report, I'm guessing it'll be hard for you to get their insurance company to pay for it though, they'll just claim equal fault or something and make you pay. Or if the person at fault admits it openly, then you can probably get their liability to cover it.